Rotary blower.



Patented Det. 23, |900.`

NITED STATES Pnrnivr Germs.

EDWARD P: REICHHELM, `OF BAYONNE, NEV JERSEY.

ROTARY BLOWER.

SPECIFICATION forming part of Letters Patent No. 660,337. dated October 23, 19004 Application filed June 24, 1899. Serial No. 721,718. (No model.)

To (tZZ whom, it may concern:

Beit known that LEDWARD P. REICHHELM, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Rotary Blowers, of which the following is a specification.

In rotary blowers as usually constructed difficulty has heretofore been experienced in conducting the oil to the various places that require lubrication, and in these blowers the parts have not been fully balanced because the shaft passed in from one side and the device operating the fan-blades was connected to the other side of the case of the machine; and the object of my invention is to overcome these diiiiculties.

In carrying out my invention the shaft passes through the blower and is mounted in suitable bearings in the case at both sides and the piston is placed eccentric to the shaft and is positively driven by the shaft through the intervention of one of the fan-blades, and the parts are readily and amply lubricated from opposite sides, the oil being conducted through a central hole in the shaft and through lateral holes therein and through the fan-blades to the joints in the eccentric pis.- ton, through which the fan-blades move, and the eccentric piston is caused to turn with a minimum of friction by being mounted on roller-bearings. 1

In the drawings, Figure l, is a longitudinal section representing my improvement, and Fig. 2 is a cross-section central of the same parts.

The cylindrical casing ct is provided with feet b b to support the same and to connect the saine to any usual or desired foundation. Heads c and CZ areprovided and connected by usual methods to the cylindrical casing'. Inlet and exit pipes ve and fareprovided and are connected to the cylindrical casing. .The respective inner faces of the heads c CZ are provided with annular grooves, the parallel faces of which form paths or runways for the rollers Zt, upon which the, eccentric piston t' rotates. This pistonis openfended and provided with circular Aedge flanges Zo, resting upon the rollers h. The shaft Zpasses through the heads c and CZ, and the respective ends are mounted in suitable bearings Z', connected to the outer faces of the said heads. The bearings for the shaft Z may be of ordinary character, as shown at the left-hand side of Fig. l, or roller-bearings with a central parting-ring, as shown at the right-hand side of Fig. l. One end of the shaft should be prolonged for a pulley, by which power is communicated to .the said shaft for driving the blower.l The fan-blades m n o pass through joints s, mounted horizontally. in enlarged equidistant parts of the eccentric piston t'. These fan-blades are connected to sleeves surroundingthe main shaft Z. The fan-blade mis connected toacentralsleeve q. Thefan-blade n is connected to a pair of sleeves pat either end of the sleeve q, and the other fan-blade 0 is connected to still another pair of sleeves r upon the main shaft outside of the aforesaid pair of sleeves p, the said pairs of sleeves rp being loose upon the main shaft Z. The sleeve q, however, is securely fastened to the main shaft Z in any desired manner, and the respective fan-blades are connected in their sleeves in any desired mechanical manner. .The sleeve q being rigidly connected to the main shaft turns therewith, carrying the fan-blade m., connected to said sleeve, with it, and through the intervention of these two parts the eccentric piston Z is rotated within the case upon its roller-bearings, and as said piston rotates in its eccentric position to the main shaft the fan-blades move in and out of the joints, passingthrough the said eccentric piston, andthe outer edges of the said fan-blades bear closely adjacent to the inner face ofthe casing, so as in vtheir movement to'force forward the airin the casing and eject the same through one pipe'and draw air in from the other pipe. Inox-der that the eccentric piston and .its roller-bearings may be suitably lubricated, l have shown oil-cups t and oilpassages u in the upper parts of the heads c andcZ for supplying oil at this point. .In orderthat the main shaft and the fan-bladesmay be suitably lubricated at their various sliding contact, I provide oil-cups'u.

In the hub projections on the outsides of the heads, through which the main shaft passes, there are oil-passages down from the oil-cups o, and the main shaft has a central hole or channel at 2, running through the same for the entire width ot the blower, and lateral holes 3 are cut through the shaft, connecting with the central hole and permitting the oil to pass from the passage therefor below the oil-cups and through the bearings ofthe shaft into the longitudinal oilpassage in the center of the shaft. I also provide below the said oil-cups and inline with the holes passing laterally through the shaft an annular groove around the shaft, which supplies oil to the bearings of the shaft.

The joints s are channeled transversely for almost their entire length to receive the fanblades m, n, and 0, and these channels are cut away at opposite points 4E to provide oil passage-ways when the blades are in place, and the said joints are bored transversely with holes 5, that allow the oil to pass out from these channels t to outside channels 6 in the enlarged portions of the eccentric piston.

The main shaft is perforated transversely with oil-holes at 7, 8, and 9, and the sleeves of the fan-blades are also perforated in line with the perforations of the shaft, and the fanblades m, n, and o also have perforations at l0, ll, and l2 in line with the perforations of the shaft and sleeves, which extend to transverse perforations 13, 14, and l5, made through the fan-blades at such a place that they agree with the transverse perforations 5 of the joints when the fan-blades come into their lower vertical position. From Fig. 2 it will be noticed that the fan-blade 'm is in its lower vertical position, and in this position the oil passes down through the shaft, the sleeve, and thefan-blade, through the transverse opening in the blade into the transverse opening in the joint s, and so into the longitudinal channels in the joint s and in the eccentric piston inline therewith. Thus in the vertical position each blade as it rotates is lubricated in the same manner, not with a surplus of oil, but with sufficient oil to accomplish the object sought. It will be noticed that the eccentric piston, mounted in roller-bearings in the case at its opposite sides, and the main driving-shaft passing directly through the blower provides for a balancing of the parts, so that the same are capable of operating with a minimum of friction and with an eXactness and smoothness not attainable in the old form of pressureblowers.

I claim as my inventionl. In a rotary blower, a main shaft passing centrally through the case, bearings therefor in opposite heads of the case, a piston within the case placed eccentric to the driving-shaft and having laterallyprojecting heads, run- Ways formed in annular recesses in the inner passing through the said eccentric piston at t equal distances apart, fan blades passing through said joints sleeves connected to said fanblades and mounted on the main drivingshaft, one of said sleeves being permanently connected to the shaft for transmitting the power of the shaft through the fan-blade to rotate the eccentric piston, substantially as set forth.

3. In a rotary blower, a main shaft passing centrally through the case, bearings therefor in opposite heads of the case, a piston within the case placed eccentric to the driving-shaft and having laterally-projecting heads, bearings for the eccentric piston, circular oscillating joints passing through the said eccentric piston at equal distances apart, fan-blades passing through said joints, sleeves connected to said fan-blades and mounted on the main driving-shaft, one of said sleeves being permanently connected to the shaft for transmitting the power of the shaft through the fan-blade to rotate the eccentric piston, substantially as set forth.

fi. ln a rotary blower, the combination with a main drivingshaft passing through the blower, suitable bearings in the heads in which the same is mounted, a piston having laterally projecting heads within the case mounted eccentric to the shaft and suitable bearings therefor, oscillating joints placed at equal distances apart through the eccentric piston, fan-blades passing through said join ts, sleeves to which the fan-blades are connected mounted upon said shaft, said main shaft having a longitudinal hole through the ccnter and transverse holes at the ends for supplying oil from suitable cups and also having transverse holes through the shaft at the places where the respective ,sleeves are mounted thereon, the said sleeves and blades having holes therein in line with the transverse holes of the shaft and having lateral holes at the ends of the direct holes and the oscillating joints having transverse holes and channels and the eccentric piston having channels longitudinally and outside' of the said joints whereby the oil for lubricating the joints passes through the center hole of the main shaft and is communicated through the various transverse holes to the surfaces-of the fan-blades and the surfaces of the oscillating joints to lubricate the parts, substantially as set forth.

Signed by me this 20th day of June, 1899.

EDWARD P. REICHHELM.

Witnesses:

CHAS. A. LEIBMAN, GEO. T. PINCKNEY.

IOO 

